PDF(Pubmed)
Abstract：
OBJECTIVE: The objective of this study was to develop a numerical model of the eyeball and orbit to simulate a blunt injury to the eyeball leading to its rupture, as well as to conduct a comparative analysis of the results obtained using the finite element method against the clinical material concerning patients who had suffered an eyeball rupture due to a blunt force trauma.
METHODS: Using available sclera biometric and strength data, a numerical model of the eyeball, the orbital contents, and the bony walls were developed from the ground up. Then, 8 different blunt force injury scenarios were simulated. The results of numerical analyses made it possible to identify possible locations and configurations of scleral rupture. The obtained results were compared against the clinical picture of patients hospitalized at the Department of Ophtalmology, Medical University of Gdańsk in 2010-2016 due to isolated blunt force trauma to the eyeball.
RESULTS: It has been demonstrated that the extent of damage observed on the numerical model that indicated a possible location of eyeball rupture did not differ from the clinically observed configurations of the scleral injuries. It has been found that the direction of the impact applied determines the location of eyeball rupture. Most often the rupture occurs at the point opposite to the clock-hour/positions of the impact application. The eyeball rupture occurs in the first 7-8 ms after the contact with the striking rigid object. It has been established that the injuries most often affected the upper sectors of the eyeball. Men are definitely more likely to sustain such injuries. Eyeball ruptures lead to significant impairment of visual acuity.
CONCLUSIONS: This study may contribute to a better understanding of injury mechanisms and better treatment planning. It may also contribute to the development of eyeball protection methods for employees exposed to ocular injuries. Int J Occup Med Environ Health. 2023;36(2):263-73.
METHODS: Using available sclera biometric and strength data, a numerical model of the eyeball, the orbital contents, and the bony walls were developed from the ground up. Then, 8 different blunt force injury scenarios were simulated. The results of numerical analyses made it possible to identify possible locations and configurations of scleral rupture. The obtained results were compared against the clinical picture of patients hospitalized at the Department of Ophtalmology, Medical University of Gdańsk in 2010-2016 due to isolated blunt force trauma to the eyeball.
RESULTS: It has been demonstrated that the extent of damage observed on the numerical model that indicated a possible location of eyeball rupture did not differ from the clinically observed configurations of the scleral injuries. It has been found that the direction of the impact applied determines the location of eyeball rupture. Most often the rupture occurs at the point opposite to the clock-hour/positions of the impact application. The eyeball rupture occurs in the first 7-8 ms after the contact with the striking rigid object. It has been established that the injuries most often affected the upper sectors of the eyeball. Men are definitely more likely to sustain such injuries. Eyeball ruptures lead to significant impairment of visual acuity.
CONCLUSIONS: This study may contribute to a better understanding of injury mechanisms and better treatment planning. It may also contribute to the development of eyeball protection methods for employees exposed to ocular injuries. Int J Occup Med Environ Health. 2023;36(2):263-73.
摘要：
目的：这项研究的目的是建立眼球和眼眶的数值模型，以模拟对眼球的钝伤导致其破裂，以及对使用有限元方法获得的结果与由于钝器外伤而遭受眼球破裂的患者的临床材料进行比较分析。
方法：使用可用的巩膜生物特征和强度数据，眼球的数值模型，轨道内容，骨墙是从地面向上发展起来的。然后，模拟了8种不同的钝力损伤情况。数值分析的结果使确定巩膜破裂的可能位置和构型成为可能。将获得的结果与在齿科住院的患者的临床表现进行比较，格但斯克医科大学在2010-2016年因孤立的钝器对眼球造成创伤。
结果：已经证明，在指示眼球破裂可能位置的数值模型上观察到的损伤程度与巩膜损伤的临床观察到的构型没有差异。已经发现,所施加的冲击的方向决定了眼球破裂的位置。最常见的是,破裂发生在与冲击施加的时钟/位置相对的点处。眼球破裂发生在与撞击的刚性物体接触后的前7-8毫秒内。已经确定，受伤最常影响眼球的上半部分。男性更有可能遭受这种伤害。眼球破裂会导致视力明显受损。
结论：这项研究可能有助于更好地理解损伤机制和更好的治疗计划。它也可能有助于开发暴露于眼外伤的员工的眼球保护方法。
方法：使用可用的巩膜生物特征和强度数据，眼球的数值模型，轨道内容，骨墙是从地面向上发展起来的。然后，模拟了8种不同的钝力损伤情况。数值分析的结果使确定巩膜破裂的可能位置和构型成为可能。将获得的结果与在齿科住院的患者的临床表现进行比较，格但斯克医科大学在2010-2016年因孤立的钝器对眼球造成创伤。
结果：已经证明，在指示眼球破裂可能位置的数值模型上观察到的损伤程度与巩膜损伤的临床观察到的构型没有差异。已经发现,所施加的冲击的方向决定了眼球破裂的位置。最常见的是,破裂发生在与冲击施加的时钟/位置相对的点处。眼球破裂发生在与撞击的刚性物体接触后的前7-8毫秒内。已经确定，受伤最常影响眼球的上半部分。男性更有可能遭受这种伤害。眼球破裂会导致视力明显受损。
结论：这项研究可能有助于更好地理解损伤机制和更好的治疗计划。它也可能有助于开发暴露于眼外伤的员工的眼球保护方法。
